A proposal to move Addison Mizner Elementary School in Boca Raton to Sugar Sand Park has proven more complicated than advocates expected.

The 50-year-old school needs a larger campus because plans call for it to become an elementary/middle school in about four years.

But the proposed site at the 132-acre park has several impediments to school construction, including legal restrictions that require the land stay natural and a conservation easement that would have to be released by the city.

“I’m just trying to find a place that’s less hectic,” School Board member Frank Barbieri, Jr. said Tuesday. “We’re still investigating whether it’s a possibility.”

When voters approved the sales tax increase last year that is helping to pay for new school construction, officials began searching for new sites for several schools, including Addison Mizner, which was set to add grades six, seven and eight to relieve nearby Boca Raton Middle School.

The school, at 199 S.W. 12th Ave., now sits on 11 acres in a residential neighborhood. Barbieri said there are few available sites nearby large enough to accommodate an elementary/middle school, which typically needs at least 20 acres.

The proposal to move it to 26 acres of the park at 300 S. Military Trail has drawn support from some parents and opposition from some neighbors.

“I’m totally for it,” said Addison Mizner’s PTA president, Mike Maynes.. “It would be a brand new, state-of-the-art flagship school in a park that already has excellent facilities.”

Wanda Paul, the school district’s chief of facilities management, said the district continues to scout out other sites for Addison Mizner’s possible move.

Superintendent Robert Avossa will present the issue to the school board in the coming months, Barbieri said.

In the meantime, the district is proceeding with plans to rebuild Verde Elementary in Boca Raton by 2020 on its current campus. Plans call for Addison Mizner students to move temporarily to the old Verde buildings as the Mizner campus is under construction, wherever it ends up.